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Finished HiFi Preamplifier Board DIY Audio Amplifier Board Replacement for Marantz HDAM Classic Preamplifier
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Difference between the 3 versions
| Version | Interface | Crystal Oscillator | Digital isolation Transformer |
| Standard version | China | active Crystal Oscillator | MuRata Digital isolation Transformer |
| Upgrade version | Italian digital interface | US Femtosecond crystal oscillator | MuRata Digital isolation Transformer |
| High-end version | Italian digital interface | US Femtosecond crystal oscillator | US Digital isolation Transformer |
Description:
- Create USB Bluetooth Digital Audio Player with Hi-End Concept
- Using Qualcomm Qualcomm's Bluetooth 5.0 protocol receiving technology, the CSR8675 dual-mode chip is the best choice for current audio equipment. It supports Bluetooth 5.0 protocol and supports aptX\aptX-HD encoded audio transmission.
- In order to facilitate the Bluetooth can switch the frequency, the default output is up to 192Khz, and the USB signal also supports up to 192Khz.
- In order to reduce the interference from the power source, it is powered by a battery, and only a type c mobile phone charging cable is needed to charge the device.
- The high-performance SRC4192 sampling rate conversion dynamic range is 140db, THD+N 144db. WM8805 high performance low jitter i2s to spdif signal. ADP150 ultra-low noise voltage regulation. It also uses the ultra-precision American femtosecond crystal oscillator (advanced version) that only appeared on Hi-End audio equipment in the past, allowing the digital circuit in the machine to work within a precise time base of femtoseconds to petaseconds.
Specifications:
- Input interface: USB-B, Bluetooth 5.0
- Output interface: coaxial RCA, AES, optical fiber OPT, HDMI-IIS
- Bluetooth module: Qualcomm CSR8675 5.0
- Bluetooth support: SBC/AAC/APTX/APTX-LL/APTX-HD/LDAC
- I2S (HDMI) support: 384K/32BIT, DSD64, DSD128, DSD256
- The interface is compatible with multiple HDMI definitions (such as PS audio\Geshide, HOLO Spring, etc.)
- Fiber/Coaxial/AES/Bluetooth support: 192Khz/24bit
- USB digital interface
- Amanero USB interface
- Power supply mode: internal battery power supply, available type-c Android charging cable
- Size: 48mm x 158mm
- Net weight: 700g
Package included:
- Hi End Digital Audio Player-Standard version
